Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e6f4d96d304e43…

MALICIOUS

PDF

78.5 KB Created: 2020-11-16 15:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5d35446126f74464565c59ae6ac58f61 SHA-1: 1272538594c6d3658ab808edad17f3dfcf8e32a4 SHA-256: 46e6f4d96d304e43b05ed9adff6fa5fd18f940330b2f8c75e63d1a6ecc338f2b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing indicating it is part of a link farm, with numerous external links. One of these links, 'https://trafftec.ru/strik?utm_term=speed+up+iphone+4s', suggests a lure related to device performance. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/strik?utm_term=speed+up+iphone+4s PDF link annotation
    • https://razulusajo.weebly.com/uploads/1/3/4/4/134467314/2893983.pdfIn PDF document text
    • https://welofubevi.weebly.com/uploads/1/3/1/8/131856084/sibuw_fexaduzarisekij_magat.pdfIn PDF document text
    • https://baxikulalul.weebly.com/uploads/1/3/4/5/134582220/d94301cccecf7c.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/3125514.pdfIn PDF document text
    • https://veborikaja.weebly.com/uploads/1/3/4/3/134317734/2175288.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/soda_8_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d8c9d0c-0f09-44d4-90e9-00e903ffe2ae/mefalod.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/vobixan.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/taylormade_burner_driver_2007_specifications.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/creative_tree_diagram_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/tigonozotexosivavilipep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e4c3b89-d5c7-4201-ba3e-2c614aecf743/cq_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/28134627594.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/bacaan_asmaul_husna_latin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e3415bf-1858-487e-b6c1-017e1ada593c/how_to_choose_size_of_ice_axe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE762 6168 bytes
SHA-256: 0e87cd05f332aeb2a72b3daf131c0310eff8a4a40b86507956a7cca2f5d1d305
font_01_sfnt_off0000f704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF704 4900 bytes
SHA-256: 9cb28958f15f1db5e9fef053eb15ffbd788d077f62a0b9c5b4f299c1f925f9aa
font_02_sfnt_off000107b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B6 10828 bytes
SHA-256: 5a19e4afba0801252cdbc26a7a44fa5efb93308b273100df4149d692e02362ca

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